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. 2015 Jun 2;5:10704. doi: 10.1038/srep10704

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Phylogenetic tree of the hemagglutinin (HA) genes of influenza A (H5N6) viruses, China, 2014. Triangles indicate viruses characterized in this study. Other H5N6 viruses are indicated in circles. Horizontal branch lengths are proportional to genetic distances. Scale bar indicates nucleotide substitutions per site.